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An automatable focus-reduction neutralisation test (AFRNT) for detecting influenza neutralising antibodies in serum was developed. The assay used immunoperoxidase staining and automated foci counting with AID Diagnostika ViruSpot software. Human serum samples (n=108) were collected before and after vaccination with Pandemrix or Begrivac and were tested by AFRNT and a haemagglutination inhibition assay...
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